Liquid-fuel burner for heating plants



March 31. 1925. 1,531,741

J. E. ERICKSON ET AL LIQUID FUEL BURNER FQR HEATING-PLANTS FiI'ed Now- 1923 2 Sheets-Sheet -1.

IN vE/WDRJ JTE. ER/c so/v. W-F ER/C'KSOM BY9 c -J ATTORNEYS.

March 31. 1925. 1,531,741

J. E. ERICKSON ET AL LIQUID man Bumum FOR mums PLANTS '7 1923 2 Sheet-P5110 2 ATTOR EYS.

Patented Mar. 31, 1925.

JOHN. E. ERICKSQN ANnwn'L'rER-rj ERIoKsoN, on ST, PAUL,

eerifas ur net-ere lvfEINNESOTA.

LIQUID-FUEL BURNER FOR HEATING PLANTS.

Application-file d November- To all whom it maywo-ncewn:

Be it known that We J 011x "E. Enronsow and ll iin'rnn J. ERIOKSGN, citizens ofthe United State residing at St'."Paul, inthe will 'tfornra highly combustible-=mixture of vaporized liquid fuel and heated AlI' -fO1" luirning in the firebox-oftlie heating plan-t. An'objectin particular 13 to provide a de rice in which allof the air"whichis=drawn into the burner tosupportcombustionis pro-heated, this pre-heateda1r being employed to vaporize the liquid fuel as it is delivered to the Zone ofcon'ibustion, Another object isto provide rneansi'or regulating); the *amount of preheated air which is delivered. Anether object is toprovide means in connection With-a liquid fuel supply tank whereby the. liquid fuelinay be dropped in regulated quantity for passage to the burnu'.

The full objects and advantages of ourinvention will appear in connection *With the detailed description antbth'e'novel 'fe'atures of our inventive idea will be particin lurly pointed out in tllQCl-ilfllfiS.

In the accompanying drawings \Vlllcllll lustrate a practica'l'form' in which our invention may be embodied, Figfll is a view of the device mostly in vertical-central section. Fig. 2 is awiew 1nllOTlZODiEl-l SGCUOR on the'lin'e '22 o'f Fig 51. Fig. 3 is a Nievein horizontal section'on t-he hne33 o't Fig. 1.,

Referring tothe' drawings, the numeral designates the firebox of a furnace or other heatingplant; Located in this firebox isa burner which is preferably in the form of a casting in two or more parts, and includes a plate inein'ber 12 on the under side of which are a number 'ofsockets1% which adjustably receive cylindrical "mem hers 16 constituting legsforsupportingthe burner on the floor or base of-the heating plant. The centralportion or" theplate 12 is raised and this raise'dportion' is provided with a central opening. Surrounding this opening and placed upon the upper surface of the raised portion is a disk member 18 17, 19233- 'SeriahNo 675,319; i

preferably of brass. The underside ofthe;

raised portion "is socketedfor receiving the upper "endof a tubeQOQ'th'e lower end of constitutes a Wellfor liquid fuel Two sets ot-tubes having open lower ends extend up;

'u'hi'ch isclosed 'bjya cap'22 so that th'e tuhe ment as shown. are designated by the-character:2l-=arecoin nected with the upper portion 0121a cylin drical casting 26 soas'to}openinto-t-hespace therein; the tubes of the other'setwhich:

are des gnated 'by the character- 28- are" connected with the lower porti'onofthe cast ing 26 sow-as to "open into 'thesspace there- "through openinq's in thegplate 12 t-here be ing four "tubes i or each set in the 'enibodi The tu'bes of'one setwhieh 111." An'annula'r meinberBO rests upon the pei'aiphery oat-theplatel? soas to close the- Wall oi the furnace.

*space between: the latter and t'he interior The member 30 in effect constitutes a continuatronof the-plat 1:2 but'for convenience in fitting the burner" in the firebox, 1t"1sshown as a separate piece.

Theplate 12 audits extension-30' t'ornra substantially air-tight bottom forthe fire-boxso that the air for-supportingconnbustion is forced to gothroughthe tubes and '28 whereby it is pie-heated; A cone shaped deflector box =10 toward the wall-of thefurnace.' The 31 rests upon thetopsofthe tubes 24: so as to deflect lhe flanie in the fire" top of the cylinder '26 is'fitted with' a pli'ig-89 having a central opening 'through which a hollow-stein extends slidably: -Tl'1e'upper QDCl QZE the stenr '34 1s closed by a --reinorable plug 35.

Secured to thelower end of the =sten1 3 l which is split is spring-dike theinner Wall 1 of the cylinder 261-.

crating the damper 3G,--a lever, handle-SS is pivotally attached-to the: upper enclfiof the stem One-end of the lever "38' is pivotally attached to --a post- 4O Wh'icl1 1 extends up from the plug-32'; EXtendingup froin' the plug '32 dia1netrically opp-osite'the PCStA'O 1s a segment 42 having-at number oi recesses adapted to be engaged by-a-i catch 44 on the lever 38;" The=n1ovable en'dr'ot this lever extendsth'rougha slot 46' in the:

deflector 31. Connected with theslower portion of the Well'tube 20 is a horizontalpipe 48 which is connected to a. vertical 'upward ly extendingpip'e '50 attachecl to "the upper end ofwhich is a funnel shaped -in'einbe r 52.

Resting upon the upper end of the member is a glass cylinder 54 which constltutes daniper 36-haring sliding 'en'gagement with F or op-- CID 'valve is opened sufliciently to A head member 56 is held upon the upper end of the cylinder 54 by rods 58 which connect the head with the funnel member 52. The head member 56 has a hollow enlargement 60 forming a chamber which is connected by a perforation 62 with the sight-feed device. Extending horizontally from the enlargement 60 is a hollow stem 64:, the passageway through which is controlled by a needle valve 66. The stem 6 L is connected by a pipe 68 with a supply tank 70. The head 56 is provided with an air-pipe 72 sothat as the liquid fuel drops through the sight feed device air is drawn in through this pipe for mixing with the liquid fuel. The plate 12 is provided with an annular rib 74 which forms a catch basin for liquid fuel overflowing in case the burner goes out. A pipe 7 6 leads from the catch basin for conducting the overflowing fuel to any suitable receptacle.

The operation and advantages of our invention will now be readily understood. WVhen the burner is to be used, the needle allow the liquid fuel to drop at the desired rate through the sight-feed device, air being drawn in through the pipe 7 2 by the falling liquid, and this adds to the efficiency of the burner. The well tube 20 being full of the liquid fuel, the dropping of the liquid fuel will cause an overflow upon the brass disk 18. The provision of a brass disk reduces the tendency to form a deposit of carbon. As soon as the fuel which flows upon the disk 18 is ignited, the flame passes out under the damper 36, around the tubes 24 and 28, and is spread out'by the deflector 81. 'All of the air which supports the combustion except that which enters the sight tube device is supplied through the tubes 24 and 26 which are highly heated with the result a sight-feed device.

- that the fuel on the brass disk 18 is vaporized, this vapor being burned outside the limits of the disk. A large quantity of highly heated air is drawn in by the suction produced by the flame with the result that'a hot flame is produced with a small supply of liquid fuel. The amount of air drawn in is regulated by the position of the damper 36 and the amount of liquid fuel supplied is regulated by the position of the needle valve 66. The burner is so constructed that it may be readily installed in furnaces and other heating plants now in use. In order to more effectively clean the burner, the cap 22 and the plug 35 may be removed, thereby producing an open vertical passageway through the burner.

We claim:

'1. In combination with the firebox of a heating plant, a platelike partition which whereby said damper may be raised and lowered to regulate the amount of preheated air which passes out of the bottom of said cylindrical member, a deflector mounted at the top of said cylindrical member, and

mqoans for supplying liquid fuel to said well tu e.

2. In-" combination with the firebox of a heating plant, a partition which forms the bottom of the firebox, said partition having a raised central portion with an opening therein, means for supplying liquid fuel to said opening, an annular rib on said partition surrounding said raised portion whereby a catch basin is produced, a pipe leading from said catch basin, a plurality of tubes extending up through said partition and passing through the zone of combustion, a cylindrical member to which the upper ends of said tubes are connected'for supplying preheated air thereto, said cylindrical memher being spaced above the raised portion of said partition, a ringlike damper slidably mounted at the lower end of said cylindrical member, and means whereby said damper may be raised and lowered to regulate the amount of preheated air which passes out of the bottom of said cylindrical member.

3. In combination with the fire-box of a heating plant, a partition which forms the bottom of the fire-box, said partition having a central opening therein, means for supplymg liquid fuel to said opening, a plurality of tubes extending up through said partition around said opening and passing through the zone of combustion, a cylin drical member to which the upper ends of said tubes are connected for supplying preheated air thereto, said cylindrical member being spaced above said partition, a ringlink damper slidably mounted at the lower end of said cylindrical'member, and means whereby said damper may be raised and lowered to regulate the amount of preheated air which passes out of the bottom of said cylindrical member.

In testimony whereof we hereunto aflix our signatures.

. JOHN E. ERIC KSON.

W'ALTER- F. ERIOKSON. 

